Hammer



FIG. 1 is a right side elevation view of a hammer showing the design, the left side elevation is a mirror image of the right side view and is therefore omitted;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a front side perspective view thereof;

FIG. 5 is a rear side perspective view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a hammer, as shown. 